=500’.ThisplacestheclosestapproachofthelandslidemappedbyDOGAMIbelowtheSE <br />cornerofthesitelessthan100’fromtheproposedCHPUDboundary.Thelandslidemapped <br />belowtheNEcornerislessthan200’fromtheboundaryandthetwosmallerslidesarelocated <br />lessthan150’fromtheproposedCHPUD’seasternpropertyline,adjacenttotheRibbonTrail. <br />AtargetedinterpretationofavailableLiDARdataresultsinfurtherevidencethattheeast-facing <br />slopewithinandbeyondtheproposedCHPUDisundergoingextensiveslopemovement.Dr. <br />Schliederhasgeneratedhillshademapsthataccentuatetheslopemovementfeaturesontheslope <br />anddepositsatthebaseoftheslopenearRiverviewandFloralHill.Moreover,thereisactual <br />evidenceonthisslopethathisinterpretationofremotesensingdatahasvalidity.Numeroustrees <br />ontheslopeindicatesomesortofsoilmovement,(labeled“creep”intheForester’sReport;see <br />AttachmentH).Thecompleteabsenceofconiferoustreesonotherpartsoftheslopeindicatethat <br />soilmovementhasbeensufficientlyseveretodisruptandeliminatetreesattemptingtogrow <br />there.Thus,itisclearthatthereareslopemovementsofonekindoranother(orevenseveral <br />types)ontheeast-facingslope.Andyet,noneofthesubsurfaceexplorationconductedatthesite <br />forthegeotechnicalassessmentwasperformedonthateast-facingslope. <br />Moreover,thatslopemovementsarenotlimitedtotheareaoutsideoftheproposedCHPUDis <br />shownbythemappingoftheApplicant’sownEngineeringGeologist,whoidentifiedtwoscarps <br />ontheeast-facingslopeinthevicinityofwhatisproposedasLot17.Apparently,theonly <br />responsethismappingprovokedwastolimittheextentofthesubsurfaceexplorationtoareas <br />wheresuchevidenceisnotpresent.ItdidnotinformthedesignoftheproposedCHPUD,as <br />road/drivewayconstructionandplacementofembankmentsareplannedforthatexactarea <br />(proposeddrivewayforLots17and18). <br />Inaddition,BranchEngineeringpresentstypicaldesignsforfillembankments,apparentlytobe <br />utilizedforbothroadembankmentandbuildingpadconstruction.Thisdesignhasbeen <br />developedinthecompleteabsenceofsubsurfaceinformationabouttheareaswherethese <br />embankmentsaretobeplaced.Thestaffreportdismissesthisconcernbyrelyingonthe <br />statementthatunsuitablesoilsare,atmost,2.5feetdeep.Thisiscompletelyinconsistentwiththe <br />informationinthetestpitlogs.Theyindicatethat“slightlyplastic”completelydecomposed <br />sandstoneispresenttoundetermineddepthsbeyond5and6feetinthevicinityofTP-3,-5,and- <br />8.BranchEngineering’ssubsurfaceexplorationiswoefullyinadequatetodefinetheconditions <br />andgeologicdesignconstraintsonthesteepeast-facingslopewherelargefillembankmentswill <br />berequiredforconstructionofboththeinfrastructurefortheproposedCHPUDandbuilding <br />pads. <br />3.TheGeotechnicalAssessmentFailstoConsidertheStructuralGeology <br />Asdiscussedunderitem1ofthissection,theApplicant’sgeotechnicalconsultantsmisidentified <br />therocktypeunderlyingtheproposedCHPUD,assumingthattheridgeisunderlainbyigneous <br />rock,whenitisunderlainbysedimentaryrock.However,thisisaveryimportantdistinction. <br />ThesedimentaryrockmakinguptheridgeconsistsoftheEugeneFormation–averyshallow <br />marinedeposit.Moreover,itdoesnotconsistonlyofsandstone,butiscomplexrockunit <br />consistingofinterbeddedsandstone,siltstone,claystone,andweatheredvolcanicashbeds. <br />ThroughouttheEugene/Springfieldarea,thesebeddedsedimentaryrocksdipgenerallyto(are <br />112 <br /> <br />